Singapore — GST InvoiceNow (C5)Submit a GST InvoiceNow package to Peppol, IRAS, or bothSubmit a GST InvoiceNow package to Peppol, IRAS, or both POST /api/v1/jurisdictions/sg/c5/submissions Submit a GST InvoiceNow package to Peppol, IRAS, or both Request Responses202422Successful ResponseValidation Error